Electronic photographic copying machine

ABSTRACT

In an electrostatic photocopying machine, a drum having an axially extending notched portion, and a photosensitive sheet attached to the drum by a clamping device disposed in the notched portion of the drum. The clamping device includes an elastic member for resiliently holding the photosensitive sheet on the drum.

United States Patent 1191 Takahashi et al.

[ ELECTRONIC PHOTOGRAPHIC COPYING I MACHINE [75] Inventors: Isao Takahashi, Yokohama;

Motoharu Fujii, Tokyo; Kazuo Kawakubo, Tokyo; Masao Ariga, Tokyo; Susumu Sugiura, Yamato, all of Japan [73] Assignee: Canon Kabushiki Kaisha, Tokyo,

Japan [22] Filed: July 23, 1973 [21] Appl. No.: 381,400

Related U.S. Application Data [62] Division of Ser. No. 21l,276, Dec. 23, 1973.

52 us. c1. 355/3 R, 355/16 51 1111.01 G03g 15/00 58 .Field of Search 355/3 R, 16, 11, 14

[56] References Cited UNITED STATES PATENTS 3,552,957 l/l97l Hodges 355/3 1451 Sept. 10, 1974 3,563,734 2/1971 Shcly 355/3 X 3,649,115 3/1972 Hodges 355/3 X 12/1972 Moxness et al. 355/3 FOREIGN PATENTS OR APPLICATIONS l54,222 5/1951 Australia 355/14 Primary Examiner-Robert P. Greiner Attorney, Agent, or Firm-Fitzpatrick, Cella, Harper & Scinto [57] ABSTRACT In an electrostatic photocopying machine, a drum having an axially extending notched portion, and a photosensitive sheet attached to the drum by a clamping device disposed in the notched portion of the drum. The clamping device includes an elastic member for resiliently holding the photosensitive sheet on the drum.

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1. In an electrophotographic copying machine, an improved photosensitive member comprising a cylindrical drum having a portion of its surface cut away to provide an axially extending notched portion in the surface of the drum, clamping means provided in said notched portion, and a photosensitive sheet, wherein said clamping means includes first holding means for holding one end of said photosensitive sheet, and second holding means having an elastic member connected between said drum and the other end of said photosensitive sheet for resiliently holding said sheet on said drum. 